Prescrire international
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This review examines whether the use of automated external defibrillators by first-responders improves the survival of adults who suffer cardiopulmonary arrest. We also examined the risks associated with these devices, based on a review of the literature using the standard Prescrire methodology. Automated external defibrillators detect ventricular fibrillation with almost perfect sensitivity and specificity. ⋯ In the United States, about 1 in 5 functioned over a 10-year period, mainly due to electrical or software problems. In summary, automated external defibrillators have a favourable risk-benefit balance, at least in trained hands. Specific training helps first-responders to act purposefully and without delay, and to implement the chain of survival until medical help arrives.